Portable sawing-machine



v (No Model.) 2 Sheets-Sheet 1.

- W. D. GUNN.

PORTABLE SAWING MACHINE.

No. 417,173. Patented Ded.'10, 1889.

% )iilowzey LE2? I a 0 Q, WJZWESSES (No Model.) 2 Sheets-Sheet 2,

W. D. GUNN. PORTABLE SA'WING MACHINE.

No; 417,173. Patented Dec. 10, 1889.

WIZJVESSES [META 0Q Atiomzey UNITED STATES PATENT O EIcE.

\VILLIAH D. 'GUNN, OF WVESSON, MISSISSIPPI.

PORTABLE SAWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 417,173, dated December10, 1889.

Application filed April 12, 1889. Serial No. 306,959. (No model.)

To all whom it may concern:

Be it known that 1, WILLIAM D. GUNN, a citizen of the United States,residing at VVesson, in the county of Oopiah and State of Mississippi,have invented certain new and useful Improvements in PortableSawing-llachines; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention consists of new and useful improvements in portablesawing-machines, hereinafter fully described and claimed, the object ofwhich is to provide a strong and compact mechanism for readily sawinglogs crosswise, and is adapted to the use of lumbermen in dividing treesinto proper length for the mill, or equally suitable for those desiringto divide logs into proper length ready for burning in stoves, grates,&c.

I am aware that many different varieties of machines have been producedfor the purpose above named; but I am not aware that any existingmachine comprises the features and points of novelty involved in theconstruction of my invention, which I describe as follows, referencebeing had to the accompanying drawings, which are to be considered apart of this application, similar letters of reference referring tocorres mndin parts in all the views.

Figure 1 is a perspective view of my invention complete. Fig. 2 is atop-view of the same. Fig. 3 is a view of the saw with its standards andcrossbar separated from the balance of the machine. Figv at is a sideand top view of the saw-guide.- Fig. 5 is a side view, in perspective,showing the adjustable section of the drive-wheel and also the guideslotfor controlling the saw-guide.

Referring to the different parts of my invention by letter, A indicatesthe sawguide, consisting of two pieces of timber 0, arranged parallelwith each other, and separated at their ends by means of the head-blocksa a, and serving the purpose, when used in connec tion with suchheadblocks, of forming the sides of the frame of the saw-guide A. Therectangular blocks a a, the length of which is somewhat greater than thewidth, are provided with perpendicular rectangular holes or openingsthrough the middle their entire lengthnvhile the inner sides of suchholes are cut away, forming the opening 0. The object of these slots 0is to provide a guide for holding the standard a, attached to the endsof the saw, in a perpendicular position, while the openings c on theinner side of such blocks are for the purpose of admitting the saw topass freely in or out of the saw-guide A. a is across-barreachinghorizontally from the top of one standard (0 across tothe other standard,and serving the purpose of holding such standards ina perpendicular position and regulating by its weight the cutting capacity of the saw.

On the side of the saw-guide A, I arrange a triangularly-shapedprojection (Z its entire length, such projection being intended to fitinto a correspondingly-shaped slot C in the extended part of the frame Dof the machine.

For the body proper of my machine I provide a suitably-constructedrectangularframe supported by suitably-arranged legs or up rights, andhaving a large cog-wheel 1 meshing into a smaller wheel f, both suitablyaxled and journaled onto the frame I). The outer end of the axle ofwheel-F extends through and past the frame sufficiently to admit of theadjustment of a large drive-wheel E, while the end of the axle of thesmaller wheel extends through and past the other side of the frame ofthe machine; also, for the purpose of attaching thereto the seconddrive-wheel B, the obvious purpose of both of such wheels being toregulate the motion and add power to the effect of the machine by theirimpetus when in motion. To the outside of drivewheel E, I attach ahandle 6 for applying the motive power. An additional provision forapplying motive power is found in the bandwheel f on the inner side ofthe large cogwheel F. 011 the outer side of the drivewheel B, I arrangea triangularlyshaped groove from the center to the circumference, and inthis groove I arrange a correspondingly-shaped adjustable section I),the object of such adjustable section being for the purpose of forming aconnection with the piston Z), and is in effect for the purpose ofincreasing or diminishing the diameter of the wheel, thereby regulatingthe movement of the saw. This adjustable sect-ion 1), fitting into thetriangularly-sllaped groove in the side of drive- Wheel 13, is intendedto be adjusted at any position desired, and secured by means of asuitably-provided set-screw.

In operation the log is drawn under the forwardly-projecting end of theframe D, and the standards connected with the saw and the cross-bar aare inserted in the slots 0. The power is then applied to WilGGiE, andis transmitted to saw-guide A by means of the piston and the mechanismabove described, and the saw, held in position above the log by means ofthe standards a, enters the log by its own Weight and the Weight of thestandards and cross-bar, above referred to.

It Will thus be observed that I have pro duced a strong, compact, andpractical machine, the especial and'valuable features of novelty beingcomprised in the arrangement of the saw and its accompanying standardsand guides. The piston maybe connected to the saw-guide A in anypreferred manner.

Having described my invention, What I B, having an adjustable section b,for the pur- 3o pose of increasing or diminishing the length of thestroke of the piston, and saw-guide A, composed of two parallel sides 0,separated slightly from each other by means of the slotted headblocks a,and having on its side a triangular 35 projection d, for the purpose ofengaging in the correspondingly-shaped groove 0, all substantially asdescribed, and for the purpose named.

In testimony whereof I my signature 4c in presence of two Witnesses.

W. D. GUNN.

Vitnesses:

W. H. BRITTAIN, JOHN PATTERSON.

